Spatial distribution of EG transitions at 221.03880 GHz (white solid), 221.10032 GHz (white dashed), 230.57714 GHz (white dotted), and 230.830 GHZ (white dot-dashed), overplotted on the 1.3 mm continuum observed with the SMA (color scale). The black plus sign indicates the position of the peak of the 1.3 mm continuum. For comparison, we have also added the spatial distribution of the integrated emission of K = 0, 1, 2 CH₃CN line (solid green line). All contours show the isocontour with 50% of the peak line intensity. The beam of the interferometer is shown in the lower right corner.